Structure of the neutron mid-shell nuclei $^{111,113}_{\quad \ 47}$Ag$_{64,66}$

TL;DR

This paper investigates the structure of neutron mid-shell nuclei $^{111}$Ag and $^{113}$Ag using experimental data from induced fission and theoretical modeling, revealing their collective behavior and specific excitations.

Contribution

The study provides new experimental data and applies the Interacting Boson-Fermion model to interpret the structure of these nuclei, demonstrating their collective nature.

Findings

Good agreement between model and experimental data

Evidence of well-developed collectivity in the nuclei

Superimposed $ g_{9/2}^{-3}$ excitations

Abstract

$^{111}$Ag and $^{113}$Ag were produced in induced fission reaction, where yrast and near-yrast states were populated. To interpret the new data the Interacting Boson-Fermion model was used. A good agreement with the experimental data is achieved, suggesting that the two Ag nuclei have a well developed collectivity, superimposed on $\pi g_{9/2}^{-3}$ excitations previously observed throughout the entire isotopic chain.